Improvement in railway-frogs



G. THOMAS & W. MILLER.

Railway-Frogs.

Patnted'March 3,1874.

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EEICE PATENT GEORGE THOMAS, OF JERSEY CITY, NEW JERSEY, AND WILLIAM MILLER,

A OF BROOKLYN, NEW YORK.

IMPROVEMENT IN RAILWAY-FROGS.

Specification forming part of Letters Patent No. 148,264, dated March 3, 1874; application filed December 27, 1873.

To all whom it may coneern:

Be it known that we, GEORGE TEoMAs, of Jersey City, in the county of Hudson and State of New Jersey, and WILLTAM MILLER, of Brooklyn, in the county of Kings and State of New York, have jointly invented an Improvement in Railway-Frogs, of which the following is a specification:

The invention consists in a certain arrangement of stay-bolts on opposite sides of the frog, out of line with each other, whereby the adjustment of the point is more readily effected.

In the accompanying drawing, which forms part of this specification, Figure l represents a plan of our improved frog 5 Fig. 2, a longitudinal vertical section thereof' on the line .fr x, and Fig. 3 a transverse section on the line y y.

Similar letters of reference indicate corresponding parts. Y

A is the point orsplit ends of the pointed rails, and B B the wings or wing -rails of the frog. O O are the chairs on which the wings B and point A rest, the nose or forward end of the point being riveted to one of the chairs, or resting on or entering a brace-plate, D, riveted to the chair. There may be any number of these braces or brace-plates, which are arranged between the wing-rails B B, and are bolted, at their turned -up edges, to the sides of said rails, which they serve to stiffen and keep at their proper distances apart. Trans' Versely-arranged adjustable stays o r screwbolts G Gl G2 also serve to stii'en and hold the wings and point in position, the bolt G (or there may be any number of such) passing through and screwing into the wing-rails in advance of the point, and the other bolts or stays, G1 G2, screwing through either one win grail, and into the point from opposite sides, and out of line with each other, as shown for the stay-bolts G2. These screw-stays not only serve to stiffen the frog, but to provide for adjustment of the point and wingrails in case of springing, and the whole makesboth a light and strong frog, dispensing with the usual base-plate, and admitting of the separate removal, for replacement or repair, of the point or either of the wing-rails.

It will be observed that the several staybolts G Gl G2 are arranged outside of or between the braces D, which provides for a certain independent adjustment of the wing-rails B and point A to conform to the meeting rails of the main track; also, by the disposition of the stay-bolts G2 on opposite sides of the frog,

through either wing-rail, and out of line with.

each other, provides in a most effectual manner for the springing or adjustment of the split portion of the point A to either side, and iny herein set forth.

GEORGE THOMAS. WILLIAM MILLER. Vit-nesses M IoHAEL RYAN, FEED. HAYNEs. 

